package com.utilus;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;


@Controller
public class HttpRequest {



    @Autowired
    JdbcTemplate jdbcTemplate;




    /**

     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public  String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public  String SendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Access-Control-Allow-Origin", "*");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            try {
                in = new BufferedReader(
                        new InputStreamReader(conn.getInputStream()));
            }catch (Exception e )
            {
                System.out.print("输入流建立错误");
            }

            if(in!=null)
            {
                String line;
                while ((line = in.readLine()) != null) {
                    result += line;
                }
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求,因为之前的post不能发送byte类型，重新i写一个
     */
    public  String SendPost2(String url, byte[] param, byte[] param2) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Access-Control-Allow-Origin", "*");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            int byte_len=50;
            char [] ttt=new char[byte_len+3];
            for (int i=0;i<byte_len;i++)
            {
                ttt[i]= (char) ((param[i])&0xFF);
            }
            ttt[byte_len]= (char) ((param2[0])&0xFF);
            ttt[byte_len+1]= (char) ((param2[1])&0xFF);
            ttt[byte_len+2]= (char) ((param2[2])&0xFF);

            out.print(ttt);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            try {
                in = new BufferedReader(
                        new InputStreamReader(conn.getInputStream()));
            }catch (Exception e )
            {
                System.out.print("输入流建立错误");
            }

            if(in!=null)
            {
                String line;
                while ((line = in.readLine()) != null) {
                    result += line;
                }
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }



//    public  String access_token()
//    {
//        String access_token="";
//        String access_token_time=get_access_token_time_database().get(0).get(3).get(1);
//        Date date = new Date();
//        long date_num_now= date.getTime();
//        long date_num_database = Long.valueOf(access_token_time).longValue();
//        if (date_num_now-date_num_database>1000)
//        {
//            String access_token_json;
//            access_token_json=get_url_access_token();
//            access_token_json="{\"access_token\":\"ACCESS_TOKEN\",\"expires_in\":7200}";
//            List<access_token> gameList = JSONObject.parseArray(access_token_json, access_token.class);
//            set_access_token_database(gameList.get(0).getAccess_token(),gameList.get(0).getExpires());
//
//            return  gameList.get(0).getAccess_token();
//        }
//        access_token=get_access_token_database().get(0).get(3).get(1);
//        return access_token;
//    }



    //
//    public static void main(String[] args) {
//        //发送 GET 请求
//        String s=HttpRequest.sendGet("http://localhost:6144/Home/RequestString", "key=123&v=456");
//        System.out.println(s);
//
//        //发送 POST 请求
//        String sr=HttpRequest.sendPost("http://localhost:6144/Home/RequestPostString", "key=123&v=456");
//        System.out.println(sr);
//    }
}





